The choice of a pen name should take into account the rhyme, meaning, and cultural background of the name. The following are a few possible choices that might be suitable for the ancient pen name: 1. Luoshui Mingyue: The beautiful rhyme of this name means that "Luoshui Mingyue" has a poetic feeling. 2. Purple Road and Red Dust: The meaning of this name is "Purple Road and Red Dust World". It has a mysterious and romantic feeling. 3 Drunken Casanova: The fluent rhyme of this name means that "Drunken Casanova" gives people a feeling of freedom. 4. Misty Rain in Jiangnan: This name means "Misty Rain in Jiangnan". It has a gentle and mysterious feeling. 5. Blazing Fire in Green Shirt: The rhyme of this name is powerful, meaning "green shirt and fiery passion", giving people a feeling of passion and determination. The above are a few possible choices for the ancient pen name. Of course, there are many other choices that can be chosen according to your own preferences and cultural background.